I only carry insurance which is a small card kept in my license book, my little black license book and the small bluebook which has the inspection card in it. So really it is only 2 books. Also, with all the check points and stops and accidents I have been in. All the police ever have done was check my license. However, in the accident they also wanted me to pull out my insurance card.

If the inspection is expired though... you might deal with a fee in order to get the inspection. If you were Chinese that usually entails you going to a police officer and asking for the ticket and then going back to get the inspection. I let mine expire once like a dummy and had to go through this. However they could not figure out how to charge me and ticket me, so they just waved this fee after hours of struggling with it.